Humphrey Lloyd

Rev Prof Humphrey Lloyd DD FRS FRSE MRIA (1800–1881) was an Irish physicist. He was the provost of Trinity College Dublin between 1867–1881, and Erasmus Smith's Professor of Natural and Experimental Philosophy. Lloyd is known for experimentally veifying conical refraction, a theoretical prediction made by William Rowan Hamilton about the way light is bent when travelling through a biaxial crystal. He was a Fellow of the Royal Society, and President of both the British Association and the Royal Irish Academy.